Ok, so the easiest way to do this is to just add a year for each girls age, and multiply Emma's age by 3. Of course, it takes more time, but it gives you more correct results. So, to start off, add about 10 years to each girls age. You should get 36 for Nicole, and 12 years for Emma. Now you multiply 12 times 3, and get 36. So, in about 10 years, Nicole will be 3 times Emma's age.
